29 Solve the following pair of equations graphically and find the vertices of the triangle formed by these
lines and the x-axis :
4x - 3y + 4 = 0, 4x + 3y - 20 = 0.
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2. Which among the following is the main constituent of Biogas?
[A]Methane
[B]Propane
[C]Butane
[D]Ethane
Methane
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